Thanks for the suggestion everyone, this is going to be mounted 14' above the ground without much of a hiding spot. The confetti is suppose to go off during the couple's first dance so it have to be as discrete as possible. The rest of the light around the room are connected to a DMX controller so that I can dim them during the first dance.

How about a simple idea? Take a large piece of tissue paper and add the confetti into the middle, gently fold it up, attach a piece of fishing line to the bottom so you can just rip the paper open and let the confetti out?